Control of Néel-type Magnetic Kinks Confined in a Square Nanostructure by Spin-Polarized Currents
Magnetic skyrmion in chiral magnet exhibits a variety of unique topological properties associated with its innate topological structure. This inspires a number of ongoing searching for new topological magnetic textures. In this work, we used micromagnetic simulations and Monte Carlo simulations to i...
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Frontiers Media S.A.
2021-07-01
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| Series: | Frontiers in Physics |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fphy.2021.680698/full |
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| author | Ji-Pei Chen Ji-Pei Chen Jia-Qiang Lin Xiao Song Yuan Chen Zhi-Feng Chen Wen-An Li Ming-Hui Qin Zhi-Peng Hou Xing-Sen Gao Jun-Ming Liu Jun-Ming Liu |
| author_facet | Ji-Pei Chen Ji-Pei Chen Jia-Qiang Lin Xiao Song Yuan Chen Zhi-Feng Chen Wen-An Li Ming-Hui Qin Zhi-Peng Hou Xing-Sen Gao Jun-Ming Liu Jun-Ming Liu |
| author_sort | Ji-Pei Chen |
| collection | DOAJ |
| description | Magnetic skyrmion in chiral magnet exhibits a variety of unique topological properties associated with its innate topological structure. This inspires a number of ongoing searching for new topological magnetic textures. In this work, we used micromagnetic simulations and Monte Carlo simulations to investigate an exotic Néel-type magnetic kinks in square-shaped nanostructures of chiral magnets, which performs rather stably in the absence of magnetic field. The individual magnetic kink can reside in one of the four possible corners, and carry possibly upward or downward core polarity, constituting eight degenerate states. In addition, these kinks also exhibit unique behaviors of generation, stability and dynamics, as revealed by micromagnetic simulations. It was found that such kinks can be created, annihilated, displaced, and polarity-reversed on demand by applying a spin-polarized current pulse, and are easily switchable among the eight degenerate states. In particularly, the kinks can be switched toward the ferromagnetic-like states and backward reversibly by applying two successive current pulses, indicating the capability of writing and deleting the kink structures. These findings predict the existence of Néel-type magnetic kinks in the square-shaped nanostructures, as well as provide us a promising approach to tailor the kinks by utilizing the corners of the nanostructures, and control these states by spin-polarized currents. The present work also suggests a theoretical guide to explore other chiral magnetic textures in nanostructures of polygon geometries. |
| first_indexed | 2024-12-20T04:57:33Z |
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| id | doaj.art-a83f2dca3e2a4ee98bc482fcd4f195ce |
| institution | Directory Open Access Journal |
| issn | 2296-424X |
| language | English |
| last_indexed | 2024-12-20T04:57:33Z |
| publishDate | 2021-07-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Physics |
| spelling | doaj.art-a83f2dca3e2a4ee98bc482fcd4f195ce2022-12-21T19:52:40ZengFrontiers Media S.A.Frontiers in Physics2296-424X2021-07-01910.3389/fphy.2021.680698680698Control of Néel-type Magnetic Kinks Confined in a Square Nanostructure by Spin-Polarized CurrentsJi-Pei Chen0Ji-Pei Chen1Jia-Qiang Lin2Xiao Song3Yuan Chen4Zhi-Feng Chen5Wen-An Li6Ming-Hui Qin7Zhi-Peng Hou8Xing-Sen Gao9Jun-Ming Liu10Jun-Ming Liu11School of Physics and Materials Science and Research Center for Advanced Information Materials, Guangzhou University, Guangzhou, ChinaInstitute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China Normal University, Guangzhou, ChinaSchool of Physics and Materials Science and Research Center for Advanced Information Materials, Guangzhou University, Guangzhou, ChinaInstitute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China Normal University, Guangzhou, ChinaSchool of Physics and Materials Science and Research Center for Advanced Information Materials, Guangzhou University, Guangzhou, ChinaSchool of Physics and Materials Science and Research Center for Advanced Information Materials, Guangzhou University, Guangzhou, ChinaSchool of Physics and Materials Science and Research Center for Advanced Information Materials, Guangzhou University, Guangzhou, ChinaInstitute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China Normal University, Guangzhou, ChinaInstitute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China Normal University, Guangzhou, ChinaInstitute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China Normal University, Guangzhou, ChinaInstitute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China Normal University, Guangzhou, ChinaLaboratory of Solid State Microstructures and Innovative Center of Advanced Microstructures, Nanjing University, Nanjing, ChinaMagnetic skyrmion in chiral magnet exhibits a variety of unique topological properties associated with its innate topological structure. This inspires a number of ongoing searching for new topological magnetic textures. In this work, we used micromagnetic simulations and Monte Carlo simulations to investigate an exotic Néel-type magnetic kinks in square-shaped nanostructures of chiral magnets, which performs rather stably in the absence of magnetic field. The individual magnetic kink can reside in one of the four possible corners, and carry possibly upward or downward core polarity, constituting eight degenerate states. In addition, these kinks also exhibit unique behaviors of generation, stability and dynamics, as revealed by micromagnetic simulations. It was found that such kinks can be created, annihilated, displaced, and polarity-reversed on demand by applying a spin-polarized current pulse, and are easily switchable among the eight degenerate states. In particularly, the kinks can be switched toward the ferromagnetic-like states and backward reversibly by applying two successive current pulses, indicating the capability of writing and deleting the kink structures. These findings predict the existence of Néel-type magnetic kinks in the square-shaped nanostructures, as well as provide us a promising approach to tailor the kinks by utilizing the corners of the nanostructures, and control these states by spin-polarized currents. The present work also suggests a theoretical guide to explore other chiral magnetic textures in nanostructures of polygon geometries.https://www.frontiersin.org/articles/10.3389/fphy.2021.680698/fullmagnetic kinkschiral magnetsmagnetic dynamics in nanostructuresmicromagnetic simulationsspin-polarized currents |
| spellingShingle | Ji-Pei Chen Ji-Pei Chen Jia-Qiang Lin Xiao Song Yuan Chen Zhi-Feng Chen Wen-An Li Ming-Hui Qin Zhi-Peng Hou Xing-Sen Gao Jun-Ming Liu Jun-Ming Liu Control of Néel-type Magnetic Kinks Confined in a Square Nanostructure by Spin-Polarized Currents Frontiers in Physics magnetic kinks chiral magnets magnetic dynamics in nanostructures micromagnetic simulations spin-polarized currents |
| title | Control of Néel-type Magnetic Kinks Confined in a Square Nanostructure by Spin-Polarized Currents |
| title_full | Control of Néel-type Magnetic Kinks Confined in a Square Nanostructure by Spin-Polarized Currents |
| title_fullStr | Control of Néel-type Magnetic Kinks Confined in a Square Nanostructure by Spin-Polarized Currents |
| title_full_unstemmed | Control of Néel-type Magnetic Kinks Confined in a Square Nanostructure by Spin-Polarized Currents |
| title_short | Control of Néel-type Magnetic Kinks Confined in a Square Nanostructure by Spin-Polarized Currents |
| title_sort | control of neel type magnetic kinks confined in a square nanostructure by spin polarized currents |
| topic | magnetic kinks chiral magnets magnetic dynamics in nanostructures micromagnetic simulations spin-polarized currents |
| url | https://www.frontiersin.org/articles/10.3389/fphy.2021.680698/full |
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